mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
c1d5fb019f
There were reports that PWC-based webcams don't work at some embedded ARM platforms. [1] Isochronous transfer handler seems to work too long leading to the issues in MUSB USB host subsystem. Also note, that urb->giveback() handlers are still called with disabled interrupts. In order to be able to measure performance of PWC driver, traces are introduced in URB handler section. [1] https://www.spinics.net/lists/linux-usb/msg165735.html Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#if !defined(_TRACE_PWC_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_PWC_H
|
|
|
|
#include <linux/usb.h>
|
|
#include <linux/tracepoint.h>
|
|
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM pwc
|
|
|
|
TRACE_EVENT(pwc_handler_enter,
|
|
TP_PROTO(struct urb *urb, struct pwc_device *pdev),
|
|
TP_ARGS(urb, pdev),
|
|
TP_STRUCT__entry(
|
|
__field(struct urb*, urb)
|
|
__field(struct pwc_frame_buf*, fbuf)
|
|
__field(int, urb__status)
|
|
__field(u32, urb__actual_length)
|
|
__field(int, fbuf__filled)
|
|
__string(name, pdev->v4l2_dev.name)
|
|
),
|
|
TP_fast_assign(
|
|
__entry->urb = urb;
|
|
__entry->fbuf = pdev->fill_buf;
|
|
__entry->urb__status = urb->status;
|
|
__entry->urb__actual_length = urb->actual_length;
|
|
__entry->fbuf__filled = (pdev->fill_buf
|
|
? pdev->fill_buf->filled : 0);
|
|
__assign_str(name, pdev->v4l2_dev.name);
|
|
),
|
|
TP_printk("dev=%s (fbuf=%p filled=%d) urb=%p (status=%d actual_length=%u)",
|
|
__get_str(name),
|
|
__entry->fbuf,
|
|
__entry->fbuf__filled,
|
|
__entry->urb,
|
|
__entry->urb__status,
|
|
__entry->urb__actual_length)
|
|
);
|
|
|
|
TRACE_EVENT(pwc_handler_exit,
|
|
TP_PROTO(struct urb *urb, struct pwc_device *pdev),
|
|
TP_ARGS(urb, pdev),
|
|
TP_STRUCT__entry(
|
|
__field(struct urb*, urb)
|
|
__field(struct pwc_frame_buf*, fbuf)
|
|
__field(int, fbuf__filled)
|
|
__string(name, pdev->v4l2_dev.name)
|
|
),
|
|
TP_fast_assign(
|
|
__entry->urb = urb;
|
|
__entry->fbuf = pdev->fill_buf;
|
|
__entry->fbuf__filled = pdev->fill_buf->filled;
|
|
__assign_str(name, pdev->v4l2_dev.name);
|
|
),
|
|
TP_printk(" dev=%s (fbuf=%p filled=%d) urb=%p",
|
|
__get_str(name),
|
|
__entry->fbuf,
|
|
__entry->fbuf__filled,
|
|
__entry->urb)
|
|
);
|
|
|
|
#endif /* _TRACE_PWC_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|